Some time ago I asked about resoling boots - https://www.ukclimbing.com/forums/gear/walking_boots_resole_-_recommendatio... I've just got the boots back from Alt Berg, I must say I'm well chuffed - they are as good as new, in fact better because I've already "broken them in". I would highly recommend this service, the only downside is you need to allow at least a month for the turn round...